EP1910661B1 - Gasket assembly having isolated compression limiting device - Google Patents

Gasket assembly having isolated compression limiting device Download PDF

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Publication number
EP1910661B1
EP1910661B1 EP06788615.0A EP06788615A EP1910661B1 EP 1910661 B1 EP1910661 B1 EP 1910661B1 EP 06788615 A EP06788615 A EP 06788615A EP 1910661 B1 EP1910661 B1 EP 1910661B1
Authority
EP
European Patent Office
Prior art keywords
assembly
limiting device
compression limiting
carrier frame
compression
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP06788615.0A
Other languages
German (de)
French (fr)
Other versions
EP1910661A2 (en
EP1910661A4 (en
Inventor
Brian Roberts
Gary Bold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Federal Mogul LLC
Original Assignee
Federal Mogul LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Application filed by Federal Mogul LLC filed Critical Federal Mogul LLC
Publication of EP1910661A2 publication Critical patent/EP1910661A2/en
Publication of EP1910661A4 publication Critical patent/EP1910661A4/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F11/00—Arrangements of sealings in combustion engines 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/12—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering
    • F16J15/121—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering with metal reinforcement
    • F16J15/127—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering with metal reinforcement the reinforcement being a compression stopper
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/061—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with positioning means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing

Definitions

  • This invention relates generally to static gasket assemblies of the type used to form a seal at a joint where two members are clamped together and more particularly to such gaskets having features to limit the compression of the elastic seal elements.
  • the carrier frame is fabricated of plastic and has a thickness, particularly in the regions of the sealing beads, that is effective to limit the amount by which the elastomeric sealing beads can be compressed.
  • the mating surfaces of the clamped members confront corresponding stop surfaces on the plastic carrier frame thereby precluding further compression of the elastic sealing beads. While this arrangement is effective at controlling the compression of the elastic sealing beads, it requires that the plastic carrier body be sufficiently thick and strong so as to withstand the clamping loads without breaking.
  • US-A-5267740 discloses a manifold gasket assembly according to the preamble of claim 1.
  • a gasket assembly for an internal combustion engine includes a carrier frame having a plurality of media-conveying openings.
  • Elastomeric sealing material is molded on the carrier frame in surrounding relation to at least some of the openings and project outwardly of the carrier frame so as to be elastically deformable when the gasket assembly is compressed to provide a seal about the intake openings.
  • a compression limiting device is disposed on the carrier frame and isolated from direct contact with said carrier frame by intervening elastomeric bonding material to limit compression of said elastomeric sealing material when said gasket is clamped between the head and block.
  • the elastomeric bonding material renders the compression limiting device free-floating relative to the carrier frame.
  • Such a free-floating limiter promotes even distribution of the sealing elements while still limiting the amount by which the sealing elements can be compressed.
  • the compression limiting device further includes a locator pin projecting from a compression limiting surface of the compression limiting device.
  • the locator pin has the advantage of helping locate the gasket in proper alignment during installation and use of the gasket.
  • a gasket assembly constructed according to an embodiment of the invention is shown generally at 10 in Figure 1 and includes a carrier body or frame 12 providing a rigid framework of the gasket assembly 10.
  • the frame 12 may be fabricated of a suitable material, such as aluminized steel or the like.
  • the assembly 10 is formed with a plurality of media-conveying openings.
  • the illustrated example shows an intake manifold gasket 10 having a plurality of air intake openings 14 and engine coolant openings 16.
  • the gasket 10 is used for sealing the joint between an intake manifold 18 and a cylinder head 20 ( Figure 4 ).
  • the openings 14, 16 correspond with associated openings in the intake manifold 18 and cylinder block 20 to enable flowable media, such as air and engine coolant, to be conveyed between the intake manifold 18 and cylinder head 20 through the openings 14, 16 respectively in the gasket assembly 10.
  • Beads of elastomeric sealing material 22 are molded to the carrier body 12 about each of the respective media-conveying openings 14, 16 in order to provide a fluid-tight seal about the openings when the manifold 18 is bolted to the cylinder head 20.
  • the sealing beads 22 project from the carrier body 12 on opposite sides thereof, such that the sealing beads 22 are elastically compressed when clamped between the intake manifold 18 and cylinder head 20 (compare Figures 3 and 4 ).
  • a load or compression limiting device 24 is disposed on the carrier body 12 adjacent at least one of the openings 14, 16.
  • the device 24 has opposite compression limiting surfaces 26, 28 which define a thickness t 1 of the limiting device 24 that is greater than the thickness t 2 of the carrier body 12 in the area immediately surrounding the openings 14, 16, but being lesser in thickness than the maximum thickness t 3 of the sealing beads 22 when in an uncompressed condition ( Figures 2 and 3 ).
  • By "effective thickness” it is meant to account for any intervening carrier material than may be present when measuring the sealing beads through the thickness of the gasket assembly 10 from peak to peak.
  • the compression limiting device includes an outer peripheral side surface 29 which is spaced from direct contact with the carrier frame 12.
  • the compression limiting device 24 is formed as a separate piece from the carrier frame 12 and is mounted on the carrier frame 12 by a band of intervening elastomeric bonding material 31.
  • This material 31 surrounds the device 24 about its peripheral side surface 29 and in doing so isolates the device 24 from direct contact with the carrier frame 12. This allows the device 24 to float relative to the carrier to the extent allowed for by the material 31. As such, misalignment that may occur between the clamping surfaces can be accommodated by the device by tilting or moving as necessary relative to the carrier frame 12 to achieve the compression limiting function in order to maximize the sealing effectiveness of the beads 22.
  • the device 24 may be fabricated of a suitable metal, such as stainless steel or the like, but the invention is not limited by the selection of materials.
  • the compression limiting device 24 further includes a locator pin portion 30 that projects outwardly from one of the compression limiting surfaces 26, 28 for receipt in a locating hole 32 of one of the clamping surfaces of either the intake manifold 18 or cylinder block 20.
  • Figure 4 illustrates the gasket assembly 10 in the fully clamped position, where it can be seen that the locator pin 30 is received in a locating opening 32 of the cylinder head 20 and where the intake manifold 18 and cylinder head 20 are clamped together sufficiently to compress the sealing beads 22 to the point where the clamping faces 33, 35 of the intake manifold and cylinder head 18, 20 confront the compression limiting surfaces 26, 28 of the compression limiting device, thereby precluding further compression of the sealing beads 22.
  • the compression limiting device 24 may include a hole 21 adjacent the locator pin 30 for accommodating a bolt (not shown) used for clamping the manifold 18 to the head 20.
  • the compression limiting device may be located adjacent a central one of the media conveying openings 14 approximately midway between the longitudinal ends of the carrier body 12. As illustrated in Figure 1 , there may be three such air intake openings 14 in linear succession and a single limiting device 24 associated with the middle one of the three openings 14. It will be seen that additional compression limiting devices 34 may be provided at the opposite ends of the carrier body 12, but they do not include the locater pin feature as does the device 24.
  • the device 24 By locating the compression limiting device 24 at the critical area where the head 20 and manifold 18 come together at a machined pad (i.e., the center of the gasket) the device 24 effectively precludes overcompression of the gasket in the central regions and frees up space on the carrier body 12 around the openings 14, 16 in order to increase the available sealing area for the sealing beads 22, thereby increasing the sealing effectiveness of the gasket assembly 10.

Description

    BACKGROUND OF THE INVENTION 1. Technical Field
  • This invention relates generally to static gasket assemblies of the type used to form a seal at a joint where two members are clamped together and more particularly to such gaskets having features to limit the compression of the elastic seal elements.
    • 2. Related Art
  • It is common in many applications to provide a static gasket to seal the joint between two members that are clamped together in order to provide a fluid-tight seal to media conveyed through openings between the members and through the gasket. It is common for such gaskets to have some type of rigid carrier frame onto which beads of rubber or other elastomeric materials are molded to provide an effective seal under compression.
  • In one known gasket assembly, the carrier frame is fabricated of plastic and has a thickness, particularly in the regions of the sealing beads, that is effective to limit the amount by which the elastomeric sealing beads can be compressed. At maximum compression, the mating surfaces of the clamped members confront corresponding stop surfaces on the plastic carrier frame thereby precluding further compression of the elastic sealing beads. While this arrangement is effective at controlling the compression of the elastic sealing beads, it requires that the plastic carrier body be sufficiently thick and strong so as to withstand the clamping loads without breaking. US-A-5267740 discloses a manifold gasket assembly according to the preamble of claim 1.
    • SUMMARY OF THE INVENTION AND ADVANTAGES
  • A gasket assembly for an internal combustion engine includes a carrier frame having a plurality of media-conveying openings. Elastomeric sealing material is molded on the carrier frame in surrounding relation to at least some of the openings and project outwardly of the carrier frame so as to be elastically deformable when the gasket assembly is compressed to provide a seal about the intake openings. A compression limiting device is disposed on the carrier frame and isolated from direct contact with said carrier frame by intervening elastomeric bonding material to limit compression of said elastomeric sealing material when said gasket is clamped between the head and block.
  • The elastomeric bonding material renders the compression limiting device free-floating relative to the carrier frame. Such a free-floating limiter promotes even distribution of the sealing elements while still limiting the amount by which the sealing elements can be compressed.
  • Use of the isolated compression limiting device relieves the carrier frame itself from also serving as a compression limiter. This, in turn, increases the available sealing area for the sealing material, thereby enhancing the sealing effectiveness of the gasket.
  • The compression limiting device further includes a locator pin projecting from a compression limiting surface of the compression limiting device. The locator pin has the advantage of helping locate the gasket in proper alignment during installation and use of the gasket.
    • THE DRAWINGS
  • These and other features and advantages of the present invention will become more readily appreciated when considered in connection with the following detailed description and appended drawings, wherein:
    • Figure 1 is a perspective view of a gasket assembly constructed according to a presently preferred embodiment of the invention;
    • Figure 2 is an enlarged fragmentary perspective view of a portion of Figure 1;
    • Figure 3 is an enlarged cross-sectional view taken along lines 3-3 of Figure 2; and
    • Figure 4 is a view like Figure 3, but showing the gasket installed in use under compression.
    DETAILED DESCRIPTION
  • A gasket assembly constructed according to an embodiment of the invention is shown generally at 10 in Figure 1 and includes a carrier body or frame 12 providing a rigid framework of the gasket assembly 10. The frame 12 may be fabricated of a suitable material, such as aluminized steel or the like. The assembly 10 is formed with a plurality of media-conveying openings. The illustrated example shows an intake manifold gasket 10 having a plurality of air intake openings 14 and engine coolant openings 16. The gasket 10 is used for sealing the joint between an intake manifold 18 and a cylinder head 20 (Figure 4). The openings 14, 16 correspond with associated openings in the intake manifold 18 and cylinder block 20 to enable flowable media, such as air and engine coolant, to be conveyed between the intake manifold 18 and cylinder head 20 through the openings 14, 16 respectively in the gasket assembly 10.
  • Beads of elastomeric sealing material 22 (such as rubber or the like) are molded to the carrier body 12 about each of the respective media- conveying openings 14, 16 in order to provide a fluid-tight seal about the openings when the manifold 18 is bolted to the cylinder head 20. The sealing beads 22 project from the carrier body 12 on opposite sides thereof, such that the sealing beads 22 are elastically compressed when clamped between the intake manifold 18 and cylinder head 20 (compare Figures 3 and 4).
  • A load or compression limiting device 24 is disposed on the carrier body 12 adjacent at least one of the openings 14, 16. The device 24 has opposite compression limiting surfaces 26, 28 which define a thickness t1 of the limiting device 24 that is greater than the thickness t2 of the carrier body 12 in the area immediately surrounding the openings 14, 16, but being lesser in thickness than the maximum thickness t3 of the sealing beads 22 when in an uncompressed condition (Figures 2 and 3). By "effective thickness", it is meant to account for any intervening carrier material than may be present when measuring the sealing beads through the thickness of the gasket assembly 10 from peak to peak.. The compression limiting device includes an outer peripheral side surface 29 which is spaced from direct contact with the carrier frame 12. The compression limiting device 24 is formed as a separate piece from the carrier frame 12 and is mounted on the carrier frame 12 by a band of intervening elastomeric bonding material 31. This material 31 surrounds the device 24 about its peripheral side surface 29 and in doing so isolates the device 24 from direct contact with the carrier frame 12. This allows the device 24 to float relative to the carrier to the extent allowed for by the material 31. As such, misalignment that may occur between the clamping surfaces can be accommodated by the device by tilting or moving as necessary relative to the carrier frame 12 to achieve the compression limiting function in order to maximize the sealing effectiveness of the beads 22. The device 24 may be fabricated of a suitable metal, such as stainless steel or the like, but the invention is not limited by the selection of materials.
  • The compression limiting device 24 further includes a locator pin portion 30 that projects outwardly from one of the compression limiting surfaces 26, 28 for receipt in a locating hole 32 of one of the clamping surfaces of either the intake manifold 18 or cylinder block 20. Figure 4 illustrates the gasket assembly 10 in the fully clamped position, where it can be seen that the locator pin 30 is received in a locating opening 32 of the cylinder head 20 and where the intake manifold 18 and cylinder head 20 are clamped together sufficiently to compress the sealing beads 22 to the point where the clamping faces 33, 35 of the intake manifold and cylinder head 18, 20 confront the compression limiting surfaces 26, 28 of the compression limiting device, thereby precluding further compression of the sealing beads 22. The compression limiting device 24 may include a hole 21 adjacent the locator pin 30 for accommodating a bolt (not shown) used for clamping the manifold 18 to the head 20.
  • The compression limiting device may be located adjacent a central one of the media conveying openings 14 approximately midway between the longitudinal ends of the carrier body 12. As illustrated in Figure 1, there may be three such air intake openings 14 in linear succession and a single limiting device 24 associated with the middle one of the three openings 14. It will be seen that additional compression limiting devices 34 may be provided at the opposite ends of the carrier body 12, but they do not include the locater pin feature as does the device 24.
  • By locating the compression limiting device 24 at the critical area where the head 20 and manifold 18 come together at a machined pad (i.e., the center of the gasket) the device 24 effectively precludes overcompression of the gasket in the central regions and frees up space on the carrier body 12 around the openings 14, 16 in order to increase the available sealing area for the sealing beads 22, thereby increasing the sealing effectiveness of the gasket assembly 10.
  • Obviously, many modifications and variations of the present invention are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described.

Claims (10)

  1. A manifold gasket assembly (10) for an internal combustion engine, comprising:
    a carrier frame (12) having a plurality of intake openings (14, 16) corresponding in size, shape and location to that of associated intake manifold (18) ports of a cylinder head;
    elastomeric sealing material (22) molded on said carrier frame (12) in surrounding relation to at least some of the openings (14, 16) and including sealing beads projecting outwardly of the carrier frame (12) on axially opposite sides thereof so as to be elastically deformable when the gasket assembly (10) is compressed to provide a seal about said intake openings (14, 16); and
    a compression limiting device (24), disposed on said carrier frame (12) and isolated from direct contact with said carrier frame (12) by intervening elastomeric bonding material (31), to limit compression of said elastomeric sealing material (22) when said gasket assembly (10) is clamped between the cylinder head and intake manifold;
    wherein said compression limiting device (24) is formed as a piece separate from said carrier frame (12) and includes axially opposite compression limiting surfaces (26, 28),
    characterized in that said compression limiting device includes
    a locator pin (30) projecting from a compression limiting surface (26, 28) of said compression limiting device (24) for receipt in a locating hole (32) of one of the clamping surfaces of either the intake manifold (18) or cylinder head (20).
  2. The assembly of claim 1, wherein said compression limiting device (24) includes a peripheral side surface (29).
  3. The assembly of claim 2, wherein said elastomeric bonding material (31) fully surrounds said peripheral side surface (29).
  4. The assembly of claim 3, wherein said elastomeric bonding material (31) is the same material as that of said elastomeric sealing material (22).
  5. The assembly of claim 1, wherein said compression limiting device (24) includes a bolt hole (21) adjacent said locator pin (30).
  6. The assembly of claim 1, wherein said compression limiting device (24) is fabricated of metal.
  7. The assembly of claim 6, wherein said carrier frame (12) is fabricated of metal.
  8. The assembly of claim 1, wherein said elastomeric bonding material (31) comprises rubber.
  9. The assembly of claim 1, wherein said compression limiting device (24) is free floating relative to said carrier frame (12) as permitted by said intervening elastomeric bonding material (31).
  10. The assembly of claim 1, wherein said sealing beads are disposed about said openings (14, 16).
EP06788615.0A 2005-07-29 2006-07-27 Gasket assembly having isolated compression limiting device Active EP1910661B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/193,810 US7306235B2 (en) 2005-07-29 2005-07-29 Gasket assembly having isolated compression limiting device
PCT/US2006/029116 WO2007016206A2 (en) 2005-07-29 2006-07-27 Gasket assembly having isolated compression limiting device

Publications (3)

Publication Number Publication Date
EP1910661A2 EP1910661A2 (en) 2008-04-16
EP1910661A4 EP1910661A4 (en) 2012-04-11
EP1910661B1 true EP1910661B1 (en) 2014-09-17

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EP06788615.0A Active EP1910661B1 (en) 2005-07-29 2006-07-27 Gasket assembly having isolated compression limiting device

Country Status (6)

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US (3) US7306235B2 (en)
EP (1) EP1910661B1 (en)
JP (1) JP5066519B2 (en)
KR (1) KR101256033B1 (en)
CN (1) CN101268269B (en)
WO (1) WO2007016206A2 (en)

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US20060290073A1 (en) * 2005-06-27 2006-12-28 Freudenberg-Nok General Partnership Insertable carrier for multiple piece gasket designs that limit compression
US7306235B2 (en) * 2005-07-29 2007-12-11 Federal-Mogul World Wide, Inc. Gasket assembly having isolated compression limiting device
US7302925B2 (en) * 2005-07-29 2007-12-04 Federal-Mogul World Wide, Inc Manifold gasket having pushrod guide

Also Published As

Publication number Publication date
CN101268269B (en) 2011-12-28
EP1910661A2 (en) 2008-04-16
JP5066519B2 (en) 2012-11-07
EP1910661A4 (en) 2012-04-11
US20080042372A1 (en) 2008-02-21
KR101256033B1 (en) 2013-04-18
US7306235B2 (en) 2007-12-11
WO2007016206A3 (en) 2007-05-10
KR20080034176A (en) 2008-04-18
US20130009367A1 (en) 2013-01-10
CN101268269A (en) 2008-09-17
WO2007016206A2 (en) 2007-02-08
US20070024010A1 (en) 2007-02-01
JP2009503405A (en) 2009-01-29
US8733763B2 (en) 2014-05-27
US8720906B2 (en) 2014-05-13

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